Bridge-gate



(No Model.) 3 SheetsSheet 1.

W. DEV'ERAUX.

BRIDGE GATE. No. 309,697. Patented Dec. 23, 1884.

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W. DEVERAUX.

BRIDGE GATE.

No. 309,697. Patented Dec. 23, 1884.

(No Model.) 3 Sheets-Sheeh 3.

W. DEVERAUX.

BRIDGE GATE.

No. 309,697. Patented Dec. 23, 1884.

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IVILLIAM DEVERAUX, OF CHICAGO, ILLINOIS.

BRIDGE GATE.

EEPECIPICATION forming part of Letters Patent No. 309,697, dated December 23, 1884:.

Application filed July 25, 1884.

In order to enable others skilled in the art to which my invention appertains to make and use the same, I will now proceed to describe its construction and operation, referring to the accompanying drawings, in which Figure 1 is a plan view of a portion of the bridge and the adjoining approach. Fig. 2 is a cross-section of the approach. Fig. 3 is a front elevation of the approach and the gate-open ating mechanism; Fig. 4, an end view of the bridge, and Figs. 5 and 6 are details of parts of the operating devices.

A represents a bridge of the common and well-known form, pivoted in the center and swinging entirely around to allow of the passage of vessels. Thisbridgeis upon each end provided with two toothed racks, A A the former of which is placed near one corner under the roadway, and the latter in rear of and below the other, and commencing at the inner end of the first rack and runningin toward the center of the bridge, as clearly shown in Fig. 4:.

In suitable bearings in the end of the abutment or approach is journaled a shaft, 1), upon the outer end of which is a lantern-wheel, B,whieh is engaged and operated by the rack A. Beside and below this shaft is a second one, I), the outer end of which is provided with a lantern-wheel, B, projecting in front of the other, and these wheels are each provided with cogs or teeth If, meshing together as represented, by which one gives motion to the other, as will be presently explained.

Upon the inner end of the shaft 12 is a pinion, 1), engaging a rack, 0, upon a verticallysliding bar, 0. This bar is near its lower end provided with a second rack, c, engaging a pinion, (1, upon a shaft, D, running across the (N0 model.)

the roadway when they are lowered, and when not in use stand in a vertical position, as in Fig. 5.

A second gate, E is hinged in each casing F upon ashort shaft, F, and arranged to swing across the foot-walk as the road-gates descend by a bevel-wheel, f, upon the shaft F meshing with a similar pinion, f, upon the shaft 6.

In the center of the roadway is a vertical bar, G, which rises and falls in the approach, and has upon its lower end-a rack, g, meshing with a gear-whee], (1, upon the shaft D, and having its upper end bifurcated to receive and support the ends. of the arms E, as in Fig. 2.

In operation,when the bridge is closed, the gates are open, as in Fig. 1, and when the bridge begins to swing open in one direction the rack A operates the lantern-wheel B, and by means of the pinion b and rack 0 draws down the bar 0. This bar, by its rack c and the shaft D, operates the bar 0 at the oppositeside of theroadway, so that they slide down together. These two bars operate the shafts e l and F and close the gates E E and prevent accident to both foot-passengers and teams. At the same time the gate-arms E fall, the wheel (1 lifts the supportingbar G to meet them, and as this bar rises as the arms fall it is evident that any weight upon the arms only tends to more firmly lock them in connection with their supports. The gates are thus closed before the bridge has swung more than a few feet, and all accidents prevented. WVhen the bridge is closed again, if swung back to its first position the operation is reversed but if turned entirely around the rack A engages the lantern-wheel B, and it operates the wheel B and its connecting devices in the reverse direction to open the gates, as will be at once understood.

Having thus fully described my invention,

what I claim as new, and desire to secure by other, whereby the gates are operated by the bridge in either direction, substantially as shown and described.

2. In a bridge-gate,the combi11ation,\vitl1 two hinged arms raised or lowered over the roadway by mechanism operated by the bridge,of a supporting-bar sliding vertically through the center of the roadway to support the gate-arms when lowered, substantially as shown and described.

3. The bridge A, provided with the racks A A, one in front of and above the other, in combination with two lanterirwheels, B B,

upon shafts journaled in the approach, and having teeth b meshing together, the rackbars 0 0, connected by shaft D, to operate together, the segment E, shaft 6, and arms E, secured upon its ends, substantially as and for the purpose set forth.

4. The shaft 12, carrying the lantern-wheel B and pinion b the sliding rack-bars O 0, connected by the shaft D and pinions d d, the segments E, shafts e F, gates E E and bevelwheels f f, in combination with a gear, (1,

upon the shaft D, and a verticall y-slidin g rack bar,G, operated thereby to receive and support the gate-arn1s E, substantially as and for the purpose set forth. 1

In testimony whereof I my signature in presence of two witnesses.

WILLIAM DEVERAUX. \Vitnesses:

\V. O. McARruUR, CHAS. KRESSMANN. 

